Mithrandir Metrics
Player Tacoma Rainiers Refreshed Jun 1 06:00 AM ET
Player profile / Tacoma Rainiers

Josh Simpson

P profile with live context, projection links, and Mithrandir card history when available.

Cards
0
Modules
0
Live Δ
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Club Tacoma Rainiers Position P Roster Reassigned to Minors Status Out / inactive
Rolling projection

Preseason / current pace / Bayesian update

Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.

2026-06-01
ERA preseason4.28
ERA current pace7.71
ERA rolling p504.42
Observed weight4%
ERA
1.71 3.00 4.42 5.84 7.12
FIP
3.42 4.05 4.76 5.46 6.10
K%
16.7% 20.3% 24.3% 28.2% 31.8%
BB%
6.2% 8.6% 11.3% 14.0% 16.4%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; missing coverage is shown explicitly.

2026-06-01
Mithrandir Stuff+108
91
Rolling form chart

xwOBA allowed snapshot line

Live snapshot series; true 50/100 PA windows require PA-level logs

0 snapshots
No chart yet

No Live State xwOBA snapshots are available for this player.

Optimization map

Arsenal optimization map

Pitch-shape context from this pitcher’s current arsenal snapshot. Hover a pitch to inspect usage, movement, and bat-missing context.

6Pitches 2025Season 26%Top usage
ride armside gloveside +Arsenal gap +Shape contrast
Zone profile

Aggregate zone heatmap

Aggregate zone metrics from seasonal Statcast leaderboards.

Mithrandir Metrics ZONE HEATMAP Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Pitch Zone Profile Simpson, Josh · Aggregate zone metrics; not pitch-by-pitch locations Edge: 35%35%Zone: 52%52%Whiff: 25%25%Called strike: 15%15%First pitch strike: 60%60%Hard hit allowed: 50%50% Dashed border = aggregate mixed-batter zone proxy MITHRANDIR · CHARTS
Pitch arsenal

Usage mix, movement map, and Stuff+ composition

2025 pitch-level arsenal aggregates; current season takes over after 100 tracked pitches across at least 2 pitch types. Descriptive pitch-type Stuff+ composition. Not a promoted predictive metric.

2025
Mithrandir Metrics PITCH ARSENAL DONUT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Simpson, Josh · 2025 arsenal snapshot Sweeper: 25.6%Curveball: 25.2%Sinker: 22.4%4-Seam Fastball: 10.9%Changeup: 10.8%Slider: 5.1% MIX ST 26%CU 25%SI 22%FF 11%CH 11%SL 5% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Simpson, Josh · 2025 arsenal snapshot ST: HB -0.7, IVB 3.3STCU: HB 0.4, IVB 4.4CUSI: HB 0.7, IVB 2.1SIFF: HB -0.3, IVB 1.4FFCH: HB -1.0, IVB 2.9CHSL: HB 0.0, IVB 2.7SL horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SI 50.0% 20 107 limited sample
SL 37.5% 15 103 limited sample
CB 10.0% 4 117 limited sample
FB 2.5% 1 26 limited sample
Method note

Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.

Reference layer

Current snapshot

Age28
Height6' 2"
Weight190 lb
Debut2025-06-21
Live layer

Delta / regression

No Live State delta is available for this profile yet.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
No Mithrandir card history is available for this player yet.
Projection links / recent games

Available detail

Pitcher Projections 202624.0% K | 3.87 ERAProjection